<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>第一个jQuery实例</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<h1>第一个jQuery实例</h1>
<hr>


<script>
    $(function(){
        alert('hello,jQuery!');
        console.log('hello,jQuery!');
    });
</script>
</body>
</html>
